C++ Program to check number is even or odd using call by Reference


In this program, You will learn how to check number is even or odd using call by Reference in C++.


Call by Reference

void check(int n, int *p){ }


Example: How to check number is even or odd using call by Reference in C++

Run it Now
#include<iostream>
using namespace std;

void check(int n, int *p) {

    if( n % 2 == 0){
        *p = 1;
    }else{
        *p = 0;
    }
}

int main() {

    int n, p = 1;
    cout<< "Enter a number : ";
    cin>> n;

    check(n, &p);

    if (p == 1) {
        cout<< "\nThe number is even : "<< n;
    } else {
        cout<< "\nThe number is odd : "<< n;
    }

    return 0;
}

Output:

Enter a number : 4
The number is even : 4